CVE-2022-40139: in the CISA KEV catalogue
Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability. CISA added CVE-2022-40139 to the Known Exploited Vulnerabilities catalogue on 2022-09-15 with a default due date of 2022-10-06. Known ransomware campaign use: Unknown. Forensic triage flag: No.
Trend Micro Apex One and Apex One as a Service contain an improper validation of rollback mechanism components that could lead to remote code execution. (CISA description)
- Vendor / product
- Trend Micro Apex One and Apex One as a Service
- CWE
- CWE-353, CWE-641
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 3.4%, percentile 88 (scored 2026-11-03)
EPSS puts about 3.4 in 100 odds (3.4%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 88% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2022-40139 in the CISA KEV catalogue?
Yes. CISA added CVE-2022-40139 (Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-09-15. CISA's default due date for it is 2022-10-06.
Is CVE-2022-40139 used in ransomware attacks?
CISA marks known ransomware campaign use as Unknown for CVE-2022-40139. That means CISA lacks confirmation, not that ransomware groups do not use it.
What should I do about CVE-2022-40139?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2022-40139